Transcript expression of genes encoding lipoxygenase2 () and defensin () in response to caterpillar herbivory

Seven-week-old plants [Col-0 parental (+/+), mutant (IR), and double mutant (SAR)] were subject to caterpillar herbivory by caterpillars with normal (intact) or impaired (cauterized) salivary secretions for 36 h. cDNA was prepared from total RNA extracted from vegetative tissue, and transcript expression was analysed by qRT-PCR using gene-specific primers. (A) and (B) are markers of JA-dependent gene expression (; ). Bars represent the means of three independent replicates normalized with the reference gene actin () ±SE. Within each genotype, lower case letters indicate significant differences ( ≤0.05) (=3).<b>Copyright information:</b>Taken from "Caterpillar saliva interferes with induced defence responses via the systemic acquired resistance pathway"Journal of Experimental Botany 2008;59(9):2437-2448.Published online 17 May 2008PMCID:PMC2423655.